sargent



.To ALL wHoM 1T MAY CCNCERN;

@eine gisten @anni @fitta J. B. SERGENT, CF NEW HAVEN, CONNECTICUT. Letters .Patent l-V'o. 70,750, dated .November 12, 1867.

IMLPEovEn SNAP-nook.

Be it known that I, J. B. SABGENT, of New Haven, inthe county of New Haven, *and* State of Connecticut, have invented a new Improvement in Snap-Hooks; and I. do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description'of the same, and which said drawings constitute part of this specication,and represent, in.-

Figure 1, a side view, i

Figure 2 a top view,

FigureB a central section, the hook closed, and in Figure 4 the same with the hook open. Y

This invention relates to au improvement in the construction of the snap for hooks for various purposes, and such as are commonlyknown as snap-hooks; and consists in the peculiar construction of the snap, whereby it is locked when closed. v

To enable others to construct myv improvement, I will proceed to describe the same as illustrated in the accompanying drawings.

A is the hook, B the shank, and C the loop, constructed and formed in accordance with the purpose for which .the hook is designed. In the shank and upon a pivot, a', I hang a double tongue, D, the said shank being recessed, `as denoted in fig. 4, so as to receive the lower tongue d, as seen in' tig. '3; and the uppertongue f, when so closed, corresponfds to and closes the hook, as denoted in gs. 1 and 8, so that iuclas ing the hook .upon a ring, or to whatever it is desired to attach the hook, the hook is placed thereon so that the thing to be attached will rest upon the lower tongue, as seen in tig. 4; then, drawing down the tongue, is turned down to permit its free passage within. the grasp of the hook, and close the tongue, as denoted in iig. 3. To secure the tongue thus turned down, I form a notch, z', in the rear end of the tongue, as seen in'gs. 3 and 4, and in the shank, back of the tongue, I arrange a thumb-piece, E, in any convenient manner, its forward'end being formed so as to catch in to the notch z' of the tongue, as seen in iig. 3; then the thumb-piece being-pressed up by a spring beneath, or equivalent device, so that when closed, as in fig. 3, the tongue is securely locked, and cannot by any possible accident be disengaged but by depressing the thumb-piece, as denoted in red, g. 3, so as to relieve the tongue. The hook may be opened, as denoted in g. 4; then the thumb-piece,vbearing upon the under side of the tongue, tends to hold the tongue in` an open position, and may be' arranged to hold it in' this position with considerable strength, l'by-forming a notch in the hook at that point, but this notch should be so that the hook may be forced froni the notch without mechanically depressing the thumb-piece. Held in this open position the hook is simply placed upon the thing to be clasped, and drawn down, the hook on the thumbv piece snaps into the notch t', and rmly holds the tongue in that closed position.

Having thus fully described my invention',what I claim as new and useful, and desire to secure by Letters 1. The double tongue D, in combination with the hook A, when constructed so as to'operate substantially as described. v

2. The thumb-piece E, in combination with the tongue D of a snap-hook, so as to lock and secure the snap when closed.` i f v B. SARGENT.

Witnesses: JOHN H. SHUMWAY, A. J. Tr'BBIrs. 

